various small comments

csharp/App/Backend/DataTypes/Methods/User.cs

@@ -31,7 +31,8 @@ public static class UserMethods
               .Distinct();
 
         // Distinct because the user might have direct access
-        // to a child folder of a folder he has already access to 
+        // to a child folder of a folder he has already access to
+        // ---TODO shouldn't we prevent doubling permissions? -K"
     }
 
     public static IEnumerable<TreeNode> AccessibleFoldersAndInstallations(this User user)